General description Improve traction with our Premium Stainless Steel Studs for Worx Landroid S/M Lawn Mower. These spikes eliminate holes in the lawn, enhance performance on hills, and prevent slipping on rainy days. Designed specifically for Worx robotic lawn mowers, they provide superior grip on wet and difficult terrains. Technical specifications Material: 304 stainless steel Wheel diameter: 205 mm Thickness: 2 mm Screw specifications: 4 x 20 mm stainless steel Phillips head screws Compatibility and accessories Compatible with all S and M models (not for 2021 models): S300 [WR130E], M500 [WR141E], M700 [WR142E], M1000 [WR143E], S450i [WR101 SI], S4, 50i [WR102SI], S450i [WR106SI], S700i [WR101 SI], M800i [WR111MI], M800i [WG757E], M900 [WG758E], M1000i [WG796E.1], M50, 0 2.0. [WR165E], M700 2.0 [WR167E] Installation Mounting location: Outside of the tire Tools required: Cross drill bit, 1.5 mm drill bit (optional) Assembly instructions: Place the Worx Landroid vertically with one tire facing upwards, center the studs on the wheel, pre-drill holes with a 1.5 mm drill bit, and secure the studs using the included stainless steel screws. Usage Enhances traction on wet surfaces and steep terrain Prevents the robotic lawn mower from getting stuck or digging holes in the lawn Other information All edges of the spikes are deburred for safety and performance Quality service with 100% after-sales support for customer satisfaction